<!doctype html>
<html>
<head>
    <meta charset="utf-8">
    <title>Surface - ECHARTS-GL</title>
    <meta name="viewport" content="width=device-width, initial-scale=1, user-scalable=no">
    <meta name="apple-mobile-web-app-capable" content="yes"> <!-- Fullscreen Landscape on iOS -->
    <link rel="stylesheet" href="./common.css">
</head>
<body>
<div id="main"></div>
<script src="../node_modules/echarts/dist/echarts.js"></script>
<script src="../dist/echarts-gl.js"></script>
<script src="lib/jquery.min.js"></script>
<script src="js/commonUI.js"></script>
<script>
    var chart = echarts.init(document.getElementById('main'));

    chart.setOption({
        tooltip: {},
        backgroundColor: '#fff',
        visualMap: {
            show: false,
            dimension: 2,
            min: -1,
            max: 1,
            inRange: {
                color: ['#313695', '#4575b4', '#74add1', '#abd9e9', '#e0f3f8', '#ffffbf', '#fee090', '#fdae61', '#f46d43', '#d73027', '#a50026']
            }
        },
        xAxis3D: {
            type: 'value'
        },
        yAxis3D: {
            type: 'value'
        },
        zAxis3D: {
            type: 'value'
        },
        grid3D: {
            viewControl: {
                // projection: 'orthographic'
            }
        },
        series: [{
            type: 'surface',
            wireframe: {
                // show: false
            },
            equation: {
                x: {
                    step: 0.05
                },
                y: {
                    step: 0.05
                },
                z: function (x, y) {
                    if (Math.abs(x) < 0.1 && Math.abs(y) < 0.1) {
                        return '-';
                    }
                    return Math.sin(x * Math.PI) * Math.sin(y * Math.PI);
                }
            }
        }]
    });

    window.addEventListener('resize', function () {
        chart.resize();
    });

</script>
</body>
</html>
